Multi-wavelength transmission apparatus using cylindrical lenses

Abstract

Disclosed is a multi-wavelength transmission apparatus including a wavelength divider to divide an optical signal by wavelength and output wavelength-divided optical signals to different positions, the optical signal being received from an optical circulator, a first cylindrical lens to diverge the wavelength-divided optical signals along an X axis and a Y axis and allow the wavelength-divided optical signals to be promoted in a Z-direction, a second cylindrical lens to diverge optical signals output from the first cylindrical lens along the X axis and the Y axis and allow the output optical signals to be promoted in the Z-direction, and a reflector to reflect optical signals output from the second cylindrical lens toward the second cylindrical lens, the first cylindrical lens being identical in shape to the second cylindrical lens and rotated by 90° in an Y-axial direction based on the second cylindrical lens.

What is claimed is: 
     
       1. A multi-wavelength transmission apparatus comprising:
 a wavelength divider configured to divide an optical signal by wavelength and output wavelength-divided optical signals to different positions, the optical signal being received from an optical circulator; 
 a first cylindrical lens configured to diverge the wavelength-divided optical signals along an X axis and a Y axis and allow the wavelength-divided optical signals to be promoted in a Z-direction; 
 a second cylindrical lens configured to diverge optical signals output from the first cylindrical lens along the X axis and the Y axis and allow the output optical signals to be promoted in the Z-direction; 
 a reflector configured to reflect optical signals output from the second cylindrical lens toward the second cylindrical lens; and 
 a controller configured to
 rotate any one or combination of the first cylindrical lens or the second cylindrical lens, and 
 control an optical signal passing through the any one or combination of the first cylindrical lens or the second cylindrical lens to be maintained, diverged, collected, or any combination thereof. 
 
 
     
     
       2. The multi-wavelength transmission apparatus of  claim 1 , wherein the optical signals reflected by the reflector are incident to the wavelength divider by passing through the second cylindrical lens and the first cylindrical lens, collected in the wavelength divider, and incident to the optical circulator. 
     
     
       3. The multi-wavelength transmission apparatus of  claim 1 , wherein the first cylindrical lens includes any one or combination of a first face configured to maintain incident optical signals and output the maintained incident optical signals, a second face configured to diverge incident optical signals and output the diverged incident optical signals, or a third face configured to collect incident optical signals and output the collected optical signals, and
 the controller is configured to rotate the first cylindrical lens such that the wavelength-divided optical signals are output to one of the first face, the second face, and the third face. 
 
     
     
       4. The multi-wavelength transmission apparatus of  claim 1 , wherein the second cylindrical lens includes any one or combination of a first face configured to maintain incident optical signals and output the maintained incident optical signals, a second face configured to diverge incident optical signals and output the diverged incident optical signals, or a third face configured to collect incident optical signals and output the collected optical signals, and
 the controller is configured to rotate the second cylindrical lens such that the wavelength-divided optical signals are output to one of the first face, the second face, and the third face. 
 
     
     
       5. A multi-wavelength transmission apparatus comprising:
 a wavelength divider configured to divide an optical signal by wavelength and output wavelength-divided optical signals to different positions, the optical signal being received from an optical circulator; 
 a first cylindrical lens configured to diverge the wavelength-divided optical signals travelling along an X axis and a Y axis and allow the wavelength-divided optical signals to be promoted in a Z-direction; 
 a second cylindrical lens configured to diverge optical signals output from the first cylindrical lens travelling along the X axis and the Y axis and allow the output optical signals to be promoted in the Z-direction; and 
 a reflector configured to reflect optical signals output from the second cylindrical lens toward the second cylindrical lens, 
 wherein the first cylindrical lens is identical in shape to the second cylindrical lens and is rotated by 90 degrees in an Y-axial direction based on an X-axial direction of the second cylindrical lens. 
 
     
     
       6. The multi-wavelength transmission apparatus of  claim 5 , wherein the wavelength-divided optical signals are output from the wavelength divider such that an optical signal, among the optical signals, travelling along the X axis is collimated and an optical signal, among the optical signals, travelling along the Y axis is diverged, at the first cylindrical lens, and the optical signal travelling along the X axis and the optical signal travelling along the Y axis are collimated at the second cylindrical lens. 
     
     
       7. The multi-wavelength transmission apparatus of  claim 5 , wherein the optical signals are reflected from the reflector such that an optical signal, among the optical signals, travelling along the X axis is collimated and an optical signal, among the optical signals, travelling along the Y axis is focused, at the second cylindrical lens, and the optical signal travelling along the X axis and optical signal travelling along the Y axis are focused at the first cylindrical lens. 
     
     
       8. A multi-wavelength transmission apparatus comprising:
 a wavelength divider configured to divide an optical signal by wavelength and output wavelength-divided optical signals to different positions, the optical signal being received from an optical circulator; 
 a first cylindrical lens configured to diverge the wavelength-divided optical signals travelling along an X axis and a Y axis and allow the wavelength-divided optical signals to be promoted in a Z-direction; 
 a second cylindrical lens configured to diverge optical signals output from the first cylindrical lens travelling along the X axis and the Y axis and allow the output optical signals to be promoted in the Z-direction; and 
 a reflector configured to reflect optical signals output from the second cylindrical lens toward the second cylindrical lens, 
 wherein the second cylindrical lens is identical in shape to the first cylindrical lens and is rotated by 90 degrees in an Y-axial direction based on an X-axial direction of the first cylindrical lens. 
 
     
     
       9. The multi-wavelength transmission apparatus of  claim 8 , wherein the wavelength-divided optical signals are output from the wavelength divider such that an optical signal, among the optical signals, travelling along the X axis is diverged and an optical signal, among the optical signals, travelling along the Y axis is collimated, at the first cylindrical lens, and optical signal travelling along the X axis and optical signal travelling along the Y axis are collimated at the second cylindrical lens. 
     
     
       10. The multi-wavelength transmission apparatus of  claim 8 , wherein the optical signals are reflected from the reflector such that an optical signal, among the optical signals, travelling along the X axis is focused and an optical signal, among the optical signals, travelling along the Y axis is collimated, at the second cylindrical lens, and the optical signal travelling along the X axis and the optical signal travelling along the Y axis are focused at the first cylindrical lens.